Invalid and Rational

Opposite meaning words

Invalid

Invalid adjective - Not using or following good reasoning.
Usage example: an argument which has one untrue premise is invalid
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Synonyms for Invalid
Antonyms for Invalid
Rational is an antonym for invalid in unfounded topic.
Nearby Words: invalidate, invalidated, invalidity, invalided, invalidation

Rational

Rational adjective - Having the ability to reason.
Usage example: human beings are rational creatures
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Synonyms for Rational
Antonyms for Rational
Invalid is an antonym for rational.
Nearby Words: ration, rationalize, rationale, rationalise, rationality
Similar words of invalid

Similar words of rational
Cite this Source
Rational and Invalid. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/invalid/rational
Invalid & Rational. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/invalid/rational>.
Rational or Invalid. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/invalid/rational.

Antonyms for invalid


Antonyms for rational

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